Leo P. Hassen

Security GuardChicago, IL

Manhattan Project Veteran

Leo P. Hassen was a security guard at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.

Related Profiles

J. R. Van Wazer

Y-12 Plant

J. R. Van Wazer worked for the Tennessee Eastman Corporation at the Y-12 Plant.

Robert Lyste Thornton was a Canadian-American physicist who oversaw the constuction and operation of the Beta calutron electromagnetic separation Plant in Oak Ridge, Tennessee during the Manhattan Project.

H. R. Holland

Los Alamos, NM

William Neff

B Reactor/100 Area

Neff worked at the 100-F Area at Hanford during the Manhattan Project.